@misc{indiciaed459066feafb,
  title = {Basic forms of covariation and concomitance designs.},
  author = {R W COAN},
  year = {1961},
  doi = {10.1037/h0047372},
  url = {https://pubmed.ncbi.nlm.nih.gov/13694168/},
  note = {Source identifier: 13694168}
}